Cableway.



PATENTED' DEG. 29, 1908.

T. s. MILLER.

GABLEWAY.

APPLICATION FILED JULY 30, 1901. RENEWED MAY 16. 1903.

N0 MODEL.

are. 748,295.

UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

CAB LEWAY.

SPECIFICATION forming part of Letters Patent No. 748.295, dated December29, 1903. Application filed July 30,1901. Renewed May 16, 1903. SerialNo. 157,370. the model.)

To all whom it may concern:

Be it known that I, THOMAS SPENCER MIL- LER, a citizen of the UnitedStates, and a resident of South Orange, in the county of Essex and Stateof New Jersey, have invented a new and Improved Cableway, of which thefollowing is a full, clear, and exact description.

This invention consists in improvements on the cableways shown in myPatent No.

637,143, datecl'November 14, 1899, and my' patent application, SerialNo. 683,843, filed June 18, 1898.

Figures land 2 are elevations sb owing diagrammatically twoslightly-modified forms of my invention.

In each of these forms the main or trackway rope A passes over pulleys 1and 2, located, respectively, on the head and tail supports. At thehead-supports the end of this rope has a tension or counterweight Wsecured thereto, so that the rope is under a strain corresponding withthe weight of the counterweight W. At its other end the rope A afterpassing about the pulley 2 is secured to a pulley 6, about which passesthe ban]- ing-rope B. The hauling-rope'is endless, the ends beingsecured to thecarriage G and extending in opposite directions. One endafter passing about the pulley 6 extends back through the carriage andbeneath the wheels I) b and then about the pulley 3 at the headsupportand down to the drum E. From the drum the rope extends over pulley 4 atthe head-support and is then connected with the carriage. Thehoisting-rope extends from the drum E over pulley 5 on the head-sup:port and then through the carriage beneath pulley d thereon to and'abouta pulley 7, supported from the tail-support, and thence back to thecarriage over pulley d thereon and down to the load L. In Fig. 1 thepulley7 is shown as directly supported from the tailsupport T, havingthus a fixed support, while in Fig. 2 the pulley 7 is mounted in thesame frame with the pulley 6, over which the hauling-rope runs, and sohas a movable or yield ing support. The portion D of the hoisting ropewhich extends from one support to the other may be called the full runin contradistinction to the portion D, which extends only from onesupport to the carriage. The full run D, passing beneath the pulley d onthe carriage, exerts alifting effect upon the carriage whenever the ropeis placed under strain and the lifting efiect upon the carriage isproportioned to the-strain upon the rope D, although of course only asmall percent age thereof. All of the ropes are thus utilized to supportthe carriage, and the size of the main or trackway cable and its costmay be reduced. The employment of a counterweight or yielding anchoragefor sustaining one end of the ropes also prevents the possibility ofoverstraining them, as they can never be strained beyond the amount dueto the counterweight. I

The present application being of later date than the originalapplication of which my application Serial No. 85,056 is a division, Imake no claim herein to the subject-matter claimed in said applicationSerial No. 85,056.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A hoisting and conveying apparatus comprising a trackway, a carriagethereon, means for moving the carriage along the trackway and ahoisting-rope operative independently of the traction-rope and adaptedwhen under strain to assist in supporting the carriage.

2. A hoisting and conveying apparatus comprising a trackway, a carriagethereon, means for moving the carriage along the trackway, and anindependent hoisting-rope extending across the spanand backto thecarriage,one run of said hoisting-rope engaging the carriage to assistin its support.

3. In a cableway, the combination of a supporting-rope, a hauling-ropeand a hoistingrope which extends across the span and back to thecarriage, and a carriage traveling upon and supported by all of saidropes.

4. In a cableway, the combination of a trackway-rope, a carriage, ahauling-rope and a hoisting-r0pe,and a carriage traveling upon andsupported by each of said ropes.

5. In a cableway, the combination with a trackway-rope, a hauling-ropeand a hoisting-rope extending across the span and back to the carriage,of a carriage supported by all of said ropes, and a common tensiondevice acting upon the trackway-rope and the hauling-rope to produceinitial strains therein.

6. In a cableway, the combination with a trackway-rope adapted to moveupon its supports, a carriage thereon, an endless haulingrope, a tensiondevice connected with the said two ropes to proportionally strain them,and a hoisting-rope extending across the span and back again andengaging the carriage to assist in its support.

7. In a cableway, the combination with a trackway-rope adapted to moveupon its supports, a carriage thereon, an endless haulingrope, a tensiondevice connected with the said two ropes to proportionally strain them,and a hoisting-rope extending across the span and back again andengaging the carriage to assist in its support, both runs of thehaulingrope also engaging the carriage to assist in its support.

8. In a ropeway, in combination a tractionrope containing two runsacross the span, a movable sheave in the tail-end loop of saidtraction-rope, a supporting-rope extending across the span and havingone end connected with said movable sheave, a tension device connectedwith the other end thereof, and a load-carriage supported by said.supporting and traction ropes collectively.

9. In a ropeway, in combination, a tractionrope containing two runsacross the span, a movable sheave in the tail-end loop of saidtraction-rope, a load-carriage moved by said traction-rope and asupporting-rope extending across the span and having one end connectedwith said movable sheave and a tension device connected with the otherend thereof.

10. In a ropeway in combination a loadcarriage, traction and supportingropes thereforanda tension device; the supporting-rope connecting saidtension device with said traction-rope, whereby the tension is.transmitted through said supporting-rope to said tractionrope.

11. In a ropeway, in combination, a loadcarriage, supporting andhoisting ropes, and a tension device; the supporting-rope connectingsaid tension device with said hoisting-rope whereby the tension istransmitted through said supporting-rope to said hoistlug-rope.

12. In a ropeway, in combination, a loadcarriage, traction andsupporting ropes therefor, a hoisting-rope containing an outward and aninward run and a tension device; the supporting-rope connecting saidtension device with the tail-end loop of said hoistingrope whereby thetension is transmitted through said supporting-rope to saidhoistingrope.

13. In aropeway, in combination, a loadcarriage containing four tiers ofsheaves and means of attachment between the two upper and two lowertiers, a supporting-rope upon which the upper tier rests, atraction-rope upon one run of which the next to the upper tier rests,and the lower run of which is secured to said means of attachment, ahoisting-rope on one run of which the next to the lower tier rests andthe other run of which rests on said lower tier.

14. In a ropeway, in combination a loadcarriage, traction and hoistingropes each containing an outward and an inward run and unitary meanscontrolling the tension on both of said ropes.

15. In a ropeway, in combination a loadcarriage, traction and hoistingropes each containing an outward and an inward 'run and means wherebytension is exerted on said ropes at the looped ends thereof.

THOMAS SPENCER MILLER.

Witnesses:

H. L. REYNOLDS, W. A. PAULING.

